Storm sash fastener



Patented Jan. 3, 1939 UNITED STATES PATENT OFFICE 1 Claim.

This invention appertains to new and useful improvements in storm sashfasteners especially adapted for use on easement windows.

The principal object of the present invention is to provide a fastenerfor storm sashes on casement windows which will permit the actuation ofthe storm sash along with the easement window, allowing both to be movedin connected relation.

l0 Another important object of the invention is to provide a fastenerwhereby the storm sash of a .easement window can be detachably connectedwith the easement window and caused to move incident thereto.

'I'hese and various other important objects and advantages of theinvention will become apparent to the reader of the followingspecication.

In the drawings:-

Figure 1 represents a fragmentary horizontal sectional view through aeasement window with the storm window fastened thereto, showing thesashes ln open position.

Figure 2 represents a fragmentary horizontal sectional view showing thestorm sash and casement window in closed position and interconnected.

Figure 3 is a fragmentary vertical sectional view through the fastenedportion of the sashes.

Figure 4 is a sectional view substantially on 80 line 4--4 of Figure 1.

Figure 5 is a fragmentary sectional View of the knob and shank partly insection.

Figure 6 is a cross sectional view of the shank.

Figure '7 is a fragmentary elevational view of the key head.

Referring to the drawings wherein like numerals designate like parts, itcan be seen that numeral 5 represents the frame of the window, andnumeral 6 represents the frame for the storm 0 sash. Numeral 'Irepresents the easement sash, while the numeral B represents the stormsash, these sashes being hinged'as at 9 and I0, respectively.

The Casement sash 1 is provided with a bore 45 II therethrough adjacentthe free end thereof through which the shankV or shaft I2 extends. Theshank I2 has a knob I3 at one end and this knob bears against the plateI4, which, in turn,

is secured by suitable screws to the inside of the easement sash 'I. Asplit washer I5 straddles a reduced portion I 5 on the shank I2 andbears against the plate I4 to prevent longitudinal shifting of the shankI2. 5

Numeral I6 denotes the key head which includes the flanges I'I whichprevent the key from being pulled through the slot I8 in the plate I9.This plate I9 is secured over the elongated pocket 20 of the storm sash8 and this key head 10 normally straddles the slot I8. The key head ishollow and has a cross pin 2| therein. The shank I2 is provided with alongitudinally extending slot 22 at its free end and this portionengages into the key head I6 so that the pin 2I will be 15extendingthrough the slot 22. The plate 23 on the outside of theeasement sash 'I prevents displacement of the key from the easement sash1.

So long as the key head I6 remains in the slot straddling position shownin Figure 3,"the sashes 20 will be connected together. However, if theknob I3 is given a quarter turn, the flanges Il will be aligned with theslot I8 and the sashes can then be disconnected.

While the foregoing specification sets forth 25 the invention inspecific terms, it is to be understood that numerous changes in theshape, size and materials may be resorted to without departing from thespirit and scope of the invention as claimed hereinafter. 30

Having thus described the invention, what is claimed as new is:-

In a storm sash fastener, a shaft having an operating knob at its innerend, a key-head provided with lateral flanges for engagement with aslotted locking plate carried by the storm sash, said key-head beingprovided with a hollow member inwardly of said lateral flanges. saidhollow member having the adjacent end of the shaft engaged therein, apin extending transversely in the hollow member and a longitudinal slotin the outer end of the shaft engaged with said pin to secure the keyhead to the shank for rotation therewith, means carried by the shaftsecuring the same against longitudinal movement and means carried by thekey head securing said MARTIN F. MAINS.

